NASA astronaut Scott Kelly thinks we should never have all humans on Earth at the same time ever again
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submitted by /u/mvea [link] [comments] |
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- Airbus is testing a big harpoon to snare rogue or redundant satellites and pull them out of the sky. The 1m-long projectile would be attached, through a strong tether, to a chase spacecraft. The chase vehicle would then drag its prey down into the atmosphere to burn to destruction.
- A simple artificial heart could permanently replace a failing human one